Pipe connection.



G. COWLES.

PIPE GDNNEGTION.

APPLICATION FILED AUG. 19, 1913.

Patented Aug. 11, 1914;

THE NORRIS PETERS CO., PHOTO-LITHO.. WASHINGTON. D4 12 UNITED STATES PATENT OFFICE.

GEORGE COWLES, OF SACRAMENTO, CALIFORNIA.

PIPE CONNECTION.

To all whom it may concern Be it known that I, GEORGE CowLns, a citizen of the United States, residing at Sacramento, county of Sacramento, State of California, have invented a new and useful Improvement in Pipe Connections, of which the following is a description thereof, reference being had to the accompanyingdrawings, which form a part of this specification.

My invention relates to a pipe coupling of a peculiar design and is intended to be used especially for connecting a number of coils of pipe together, one above the other as in a water heater or steam generator.

In the manufacture of the ordinary water heater or steam generator in which a number of coils of ipe are utilized, they are usually connected one above the other. One end of each coil is connected to a pipe leading to the bottom of a boiler and the other end of each coil is connected to another pipe leading to the top of a boiler, the arrangement being such that when heat is applied to the coil a circulation of water is set up in the coils on account ofthe heated water passing to the top of the boiler and the cold water coming into the coils of pipe from the bottom of the boiler. This is a wellknown principle and is very eflective in heating or boiling the water in the boiler. The source of heat is usually gas, and one difliculty which is encountered, is the fact that a pipe cannot be coiled very closely at the center of the coil, and when a gas flame is applied to the lower coil, there is a draft created which draws most of the heat up through the center of the group of coils and a great deal of the heat is lost, due to the fact that it escapes through the opening in the center of the coils without coming in contact with the pipe.

The object of my invention is to entirely Specification of Letters Patent.

Application filed August 19, 1913.

Patented Aug. 11, 1914. Serial No. 785,517.

overcome this objection and at the same time provide a coupling that is substantial and easy to install.

Figure l is an end view of one of my improved couplings, the dotted lines representing a coil of pipe connected to the coupling. Fig. 2- is another view partly in section, showing the details of construction. Fig. 3 is a sketch showing two of these couplings, one of which is shown in section connected together as they would be used in a water heater or steam generator. It is obvious that any number of these couplings can be connected together in the manner shown.

In using my improved coupling, a length of pipe is screwed in the coupling at D and is then coiled around flange A in the manner indicated by the dotted lines of Fig. 1. It is obvious that the flange A fills practically all of the space within the first turn of pipe. It is also plain that if the coupling was made without the flange A, it would be impossible to make the first turn of pipe much smaller than shown, on account of the difiiculty of bending the pipe to such a short radius without breaking it, and the result would be an opening approximately of the same size as the flange, which would be very objectionable for the reasons above stated.

Having described my invention, what I claim is as follows:

A pipe coupling having an opening at each end a third opening at the side forming a T, and a flange around said coupling in the same plane as the side opening, as shown and described.

GEORGE COWLES. Witnesses:

EMMA SONNE, NESTOR MCABEE.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, I). G." 

